Nov 10 (Reuters) - Moody's on Friday changed the outlook on the government of United States of America's ratings to "negative" from "stable".

The rating agency said it expects United States' fiscal deficits will remain very large, significantly weakening debt affordability.

Moody's affirmed the long-term issuer and senior unsecured ratings at "Aaa".

COMMENTS:

JACK ABLIN, CHIEF INVESTMENT OFFICER, CRESSET CAPITAL, CHICAGO
“It’s not about our ability to pay, it's just an indictment of our governance and how our Congress and essentially the legislature manage our finances.”

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"Even at the margin, this is not a positive, but the market will move on from this. Nonetheless, it is a reminder that the clock is ticking and the markets are moving closer and closer to understanding that we could go into another period of drama that could lead ultimately to the government shutting down."

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The S&P and Fitch AAA ratings are the highest assigned to any debt issuer.
An AAA rating is the equivalent of the Aaa rating issued by Moody's.

WASHINGTON (AP) — The credit rating agency Moody’s Investors Service lowered its outlook on the U.S. government’s debt on Friday to “negative” from “stable,” citing the cost of rising interest rates and political polarization in Congress.

Moody’s retained its top triple-A credit rating on U.S. government debt, though it is the last of the three major credit rating agencies to do so. Fitch Ratings lowered its rating to AA+ from AAA in August, and Standard & Poor’s downgraded the U.S. in 2011. A reduced outlook, however, raises the risk that Moody’s could eventually strip its triple-A rating from the U.S. as well.